That’s where Avalara sits. The Bainbridge Island, WA-based company sells sales-tax software that can plug into e-commerce, accounting, and other kinds of business programs, allowing merchants to automatically calculate how much tax is due on any given transaction.

The financing—a pretty huge amount of private investment for a Seattle-area technology company—roughly doubles the company’s entire fundraising haul over its 10-year history. It follows a $30 million investment round Avalara raised in February of this year.

The money will be used to expand the company’s footprint, both by adding more international services and acquiring other companies, co-founder and CEO Scott McFarlane said in an announcement. The company now employs more than 800 people at its offices in the Seattle area and other parts of the U.S., along with outposts in London and Pune, India.